Toothbrush



B. WEISSMAN TOOTHBRUSH Filed August a, 1925 WITNESSES INVENTOR MMKM v fime w M}? ATTORNEYS Patented Aug. 17, 1926. l i r UNITED STATES PATENT UFFIQE.

BENEDICT WEISSIELTAN, F NEW YORK, 12'. Y.

TOOTHBR'USI-I. Application filed August 8, 1525. Serial No. 49.125.

This invention pertains to toothbrushes, tions 14 of the arms 11 which extend beand aims for its principal object to provide yond the outermost cross member 13, dian improved form of toothbrush by means verge slightly and are slightly resilient. of which a more thorough and effectual The portions 14: are provided with enlarged 60 cleaning of the teeth may be accomplished in terminals 15, which due to the divergence the minimum time with amaXimum of effect of the arms 14 are offset laterally with re- It is an outstanding object of the present spect to the major length or handle portion invention to devise an improved form of of the arms 11. ,Apair of rotary parallel toothbrush by the use of which a thorough shafts 16 extend" through alined bearing 65 cleansing of all the exposed surfaces'of the openings 17 formed, respectively, in the teeth is insured and this in an expeditious bight 12 and the cross members 13. The manner. ends of the shafts which extend through More specifically the invention contemand beyond the bight 12,- are formed with plates a toothbrush including a pair of rocranks 18, the crank pins 19 of which are 70 tatable brush members mounted in relative journaled in a connecting link 20 formed relation and operable in unison to clean both with a manipulating handle 21, whereby rothe inner and outer surfaces of the upper tation of the manipulating handle 21 will and lower teeth simultaneously, together effect a simultaneous rotation of the shafts. with means for preventing contact of the The opposite end portions 22 of the shafts 20 brushes with the cheek, lips or tongue to preare provided with radial bristles 23, which clude any possibility of irritation thereto. together with the portions 22, constitute The invention furthermore comprehends a brush heads rotatable with the shafts. The toothbrush which is comparatively simple in brush heads lie wholly within the confines its construction and mode of operation, inor areasof the enlarged terminals 15, so that 25 expensive to manufacture and produce, when the brush is in applied position, as ilhighly efficient in its purpose and sanitary lustrated in Fig. 2, the cheek C and tongue to a high degree. T will be fully protected from contact with Vith the above recited and other'objects the brushes and irritation thereby when the in view, reference is had to the following, device is in use.

30 specification and accompanying drawings in In use and operation, the brush is inserted which there is exhibited. one example or in such a manner that the brush heads are embodiment of the invention which is in no disposed on opposite sides of the upper and way intended as a limitation upon the scope lower teeth U and L, with the terminals 15 of the appended claims as it is to be clearly of the arms 11 interposed between the understood that variations and modifications bristles and the cheek and tongue C and T, which properly fall within the scope of said respectively. The operator supports the declaims may be resorted to when found eX- vice by grasping the arms 11 between the pedient. outermost cross member 13 and the bight 12,

In the drawingswith one hand, and employing the other 5 4 Figure 1 is a perspective view of a toothhand for the purpose of grasping and turnbrush constructed in accordance with the ining the manipulating handle 21 alternately vention; in opposite directions. The bristles are thus Fig. 2 is a plan View of the same in aprotated 1n opposite directions to effect an plied and operating position; up-and-down brushing of the teeth to clean 1 0 45 Fig. 3 is a fragmentary sectional view and scour both the inner and outer surfaces taken approximately on the line 3 3 of of the same, the user biting down to engage Fig. 2. the biting or guiding surfaces of the teeth,

Referring to the drawings by characters after which a separation of the teeth will of reference, the brush includes a substanpermit the brushes to cleanse the biting sur- 10 50 tially U-shaped frame 10, the side arms 11 faces.

of which are joined at one end by a bight It is, of course, obvious that a dentifrice 12, and further connected at longitudinally may be applied to the brush bristles and that spaced points by cross members 13. The the brush heads are moved and positioned portion of the arms 11 between the bight at various points to effect the cleansing of 12 and the outermost cross member 13, con all the teeth. stitutes a handle, while the remaining por- After the cleaning operation, the bristles I longitudinally spaced point-s,

and the may be cleansed by running water or by submerg'ing the same in a cleansing solution, if desired, it being understood that the material from which the frame and shafts are constructed is of a nature which is unaffected by water or cleansing fluids, and,-furthermore, that all parts are exposed whereby the stream of water or cleansing fluid. may strike the same and mechanically remove foreign matter therefrom- What is claimed is:

1. In a toothbrush, a substantially U- shaped frame, including side arms connected at. one. end by a bight. and transverse connecting means between. the side. arms at. a pair of through the bight. transverse. connecting means, said shafts having crank terminals protruding beyond the bight, a connecting element between the crank. terminals having a manipulating handle, bristles connected to. and disposed, radially from the. opposite: ends of the shaftsto provide brush heads. in parallel parallel. shafts extending spaced relation adapted to be disposed on opposite sides of the teeth, and enlarged terminals at the free ends of the side arms of the frame constituting means for respectively protecting the from contact of the brush heads therewith.

2. In a toothbrush, a substantially U- shaped frame, including side arms connected at one end by a bight and transverse connecting means between the side arms at longitudinally. spaced points, a pair of parallel shafts extending through the bight andpthe transverse connecting means, said shafts. having. crank terminals protruding beyond the bight, a connecting element between. the crank terminals having a manipulating handle, bristles connected to and disposed radially from theopposite ends of the shafts to provide brush heads in parallel spaced relation adapted to be disposed on opposite sides-of the teeth, and enlarged terminals at the. freeendsof saidarms of the frame constituting means for respectively protecting the cheek, lips and tongue from contact of the brushes heads therewith, said frame between. the bight and thev connected portions of the side arms constitut ing a hand-grasping portion for holding the device: in juxtaposition to the teeth.

BENEDICT WEISSMAN.

cheek, lips and tongue 

